IT'S YOUR TURNJulia took a 20-item math test. If she got 14 out of the 20 items correctly, what is her grade inpercent? If she got 85% in the test, how many items did she get wrong?
Answer (1)
Answer:To find Julia's grade in percent and the number of items she got wrong, follow these steps:1. **Calculate Julia's grade in percent:** \[ \text{Grade} = \left( \frac{\text{Number of Correct Answers}}{\text{Total Number of Items}} \right) \times 100 \] \[ \text{Grade} = \left( \frac{14}{20} \right) \times 100 = 70\% \] Julia's grade is **70%**.2. **Find the number of items she got wrong if her grade was 85%:** First, calculate the number of correct answers based on 85%: \[ \text{Number of Correct Answers} = \left( \frac{85}{100} \right) \times 20 = 17 \] The number of items she got wrong is: \[ \text{Number of Wrong Answers} = \text{Total Number of Items} - \text{Number of Correct Answers} \] \[ \text{Number of Wrong Answers} = 20 - 17 = 3 \] If she got 85%, she got **3 items** wrong.
